Look up, a powerful long-term story in the sky

Mark Dankberg, ViaSat chairman and CEO, discusses the "early stages" and growing business of in-flight WiFi. Dankberg says airlines need to realize having everyone using WiFi on the plane is better than just a fraction.

The "Mad Money" host believes ViaSat is a shrewd way to leverage the in-flight WiFi business, a long-term theme that he thinks could generate profits for quite some time to come.

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However ViaSat stock has been marching sharply higher, gaining 20% in only a month.

Cramer hates chasing a stock that's already rallied sharply. However, if a broad market selloff drives this stock lower, it may come back down to an attractive point of entry.

And Cramer would be very interested in this stock at lower levels.

"The in-flight WiFi business is growing like a weed—it's expected to expand fifteen fold over the next decade, from a $350 million business to a $5 billion business," Cramer said.

And as a provider of in-flight WiFi, ViaSat isn't only capturing that business, it's emerging as a powerhouse with its technology among the best in the industry. "On average it takes 8 seconds to download a webpage using ViaSat," Cramer said. "By comparison rival services take as long as 58 seconds to down the same page."

Of course, in-flight WiFi isn't the only catalyst.

"ViaSat also provides marine and ground mobile satellite services, and they also do some business with government agencies," Cramer added. Those business units could also drive growth.